A multi-drill bit exchange device and method on a drilling shearer

Abstract

The invention disclose multi-drill-bit interchangeable equipment and a method for an auger-type coal cutter. The equipment is mainly composed of a drive frame, interchangeable insertion blocks, interchangeable transmission cases and interchangeable stabilizers. On a same main machine of an auger-type coal cutter, according to mining working conditions of a drilling and mining working surface and the requirement of the needed drill bit number, a three-drill-bit auger-type coal cutter can be changed to be a four-drill-bit or five-drill-bit coal cutter by changing positions and the numbers of hydraulic motor supports, air duct supports and the interchangeable insertion blocks on the drive frame and choosing types of the interchangeable transmission cases and the interchangeable stabilizers in a matched mode. By means of the multi-drill-bit interchangeable equipment and method for the auger-type coal cutter, interchanging of three drill bits, four drill bits and five drill bits can be achieved on a machine body of the same auger-type coal cutter according to actual working conditions under a thin seam coal mine, the multi-drill-bit interchangeable equipment and method for the auger-type coal cutter are suitable for cutting conditions of different thin seams, the adaptability to changes of thicknesses of coal seams and conditions of bottom and top beds is strong, the mining efficiency of thin and extra-thin seams can be improved, and the mining cost is reduced.

Description

technical field [0001] The invention relates to a multi-drill bit exchange device and method, in particular to a multi-drill bit exchange device and method suitable for drilling shearers in the mining of thin and extremely thin coal seams. Background technique [0002] The unmanned working face coal mining method of drill shearer is a more effective method in extremely thin coal seams. Drill shearer is a coal mining equipment that can solve the problem of thin and extremely thin coal seam mining and improve the recovery rate of coal resources. At present, drilling shearers have multiple drill bit series. In the process of thin coal seam mining, the thickness of the coal seam and the roof and floor conditions of the same working face will change. For the same series of drilling shearers, they cannot fully adapt to the mining situation and need to be replaced. The whole drill type shearer equipment wastes time and has low work efficiency. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

At present, drilling shearers have multiple series of drill bits. During the mining of thin coal seams, the thickness of the coal seam and the conditions of the roof and floor of the same working face will change. For the same series of drilling shearers, they cannot fully adapt to the mining situation and must be replaced. The whole drill shearer equipment wastes time and inefficiency

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